1. 2012-12-19 [Bug 54325] Concurrency issues in AppenderAttachableI log4j-dev bugzilla 2. 2012-12-19 [Bug 54325] Concurrency issues in AppenderAttachableI log4j-dev bugzilla 3. 2012-12-19 [Bug 54325] Concurrency issues in AppenderAttachableI log4j-dev bugzilla